Furnace.



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xiv n Ww PATENED Nov. 12, 1907.

E. H. SCHWARTZ.

V FURNACE. APPLIOATION FILED JAN.16, 1903.

2 SHEETS-SHEET 2.

UNIT-,En sf-'raras PATENT OFFICE.

` EnWARD H. SCHWARTZOF CHICAGO, ILLINOIS, IIssIoNOR To 'run HAWLEY DOWN DRAFT y :v FURNAOE COMPANY, or CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FURNACE Specification of Letters Patent. l

Patented Nov. 12, 17907.

To all whom it may concern.-

'B e itknown that l, EDWARD H. ScuwAurz, residing at Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Furnaces, Vof which the following is a specification.

My invention relates to certain new and useful improvements in furnaces of the same general character -or class as the furnace described andclaiined in my prior'Patent No. 708,782 dated September 9, 1902.

, The features of novelty and utility ot' my present furnace will be understood from the description hereinafter given. luthedrawings, Figure l is a central vertical and longitudinal section of my furnace; Fig. 2 a cross section thereofandFig. 3 a sectional Aplan view online .Ai-B of Fig. l. "Jlhe furnace comprises essentiallya furnace body or sh'ell mounted to tilt on suitable standards and forining a furnace chamber,i in combination with burners for directing in a peculiar manner a gaseous llame (or the like) into the4 furnace chamber,` the air which is mixed in such burner being preliminarily heated by the Waste heat of the` furnace.'

As herein shown, the furnace is inktherform of 'a cylinder from which extend truncated conical endsand "consists of a cylindrical shell l and ends 2 and 3, oi

' ing. However,- the construction shown and just described ismerelydesigned to illustrate the preferable form of furnace, and it is evident that either ofthe two openings may be used as a pouring opening or a ,April 14, 1903, v^`coperatcs with the trunnion ll to" T cause tilting of the furnace, such mechanism coinprising a worm gear l5 fixed to the trunniou and operated by the hand wheel 16 through the medium of the worm geur 17.'

i The trunnion 12 is a hollow one with an air opening .i8 communicating with thev burners through apipe 19 and with a source of Iair pressure through a stationary air supply pipe20. An oilor yfuel supply pipe 2l, extending to the burners, is swiveled onto thc air supply pipe 20, in the same manner as shown in my said prior Patent No. 725,490, and consequently dotailed description of these particular parte is -unnecfor the purpose of permitting ready renewal of these` particular linings, which are the ones subjected to the greatest wearing action. This shell extension 22 is surrounded byul concentric shell 23, so as to form an annular air heating chamber 24 closed at its top, and

`communicating with the air pipe 19 as shown in '2 and 3.. I

The burners 25, two in number in the present instance, enter the top ofthe furnace on either side of `the outlet opening and are inclined towards each other in such manner aste direct. into the furnace l chamber, fiames which converge or moet substanti'ally at the central point of the furnace and form two rotary flames on either side of 'the central vertical anis of the furnace, all as illustrated in a general way by the dotted lines in Figs. l and 2.

.ln detail, the burners each comprise a casting having a nozzle portion 20 penetrating the furnace and also a lateral portion 27 communicating with the air heating chamber 24 and bolted or otherwise removably secured tothe shell or casing of such chamber sec Fig. l), with the result that the entire air heating' 'chamber and the outlet extension itself Vcan beremoved without disturbing the burners. 'lhe fuel is supplied through injectors 28 secured to the burners and extending axially of their nozzles. These injectors, which are governed by the hand valves 29, recgive oil from the branch pipes 30 communicating with the oil supply Apipe 2l.

vln operation, the material to be. melted or otherwise treatedis introduced into the furnace, preferably after a preliminary heating, and the burners are 'their sini-ted, with the result that the rotating flnnics hereinbefore described rapidly melt or reduce such material lying upon the bottoni or hearth of the furnace. During this period Vthe charging opening and pouring opening are both 'closed by their doors, and the dames and products of combustion pass outward through the outlet 6 and thc outlet extension, thereby heating the latter and causing a heating of the air in chamber 24 before introduction to the burners, so that aV hottcn and better flame tthereupon be charged with the proper amount of ore Aand their fluxes. After the furnace'is restored to its normal or desired working position, the'ore will remain considerably banked up toward the right endofl the 'furnacechamben Fig. l, 'with the mein. body above the hearth, with the resulting advantage that the Ore if better exposecbto the fiame'and, as melted, will run down upon the hearth. The molten material thus flowing to the hearth in comparativelythin streams will be highly heated bythe flames and rendered quite fluid, However, this particular method of melting is applicable to the melting of metals as well as of ores and also to the melting and treatment of other substances.

The construction of the furnareand the arrangement oi the Vburners therein are such that the flames will take the directions indicated in the drawings. The two ilames will converge centrally oi the furnace and bc- "cause of the. general direction of the flames, after converging, which is downwardly, directly and squarely exit therefrom. 'This described rotation of the flames is also brought `about by the arrangement of theoutlet substantially at the centerI of the furnace.

My furnace may be employed for many different'purposes and for the treatment. of different. materials, whether metals, ores, or not, and I therefore contemplate using the furnace wherever applicable. whetherthe operation be metallurgical, as herein described, or

not;. for instance,` my furnace may be used for the melting of glass', enamel and other non-metallic materials.

l claim: i v

1. A furnace comprising a tiltable body and burners dis` .charging into the furnace ame j ets which converge and are combined into a single flame, such flame being directed towards and arranged to impinge the hearth of the furnace and the walls of such furnace being arranged to divide the flame into separate flames and to cause the same to move laterally towards opposite ends of the furnace.

2. A furnace comprisingY a tiituble body and burners dis'- charging f inme intel-the furnace, the llame being directed towards the hearth of the furnace and rbc walls of such furnace being arranged iofcuuse the fizuuc to `rotate in a vertical plane in two similar circles.

r3. A furnace comprising'a tilvtablc body and burners discharging iiume into the furnace, the burners being convergingiy arranged and the fiume being directed towards the hearth ofthe furnace which is arranged to divide such flame into two rotating flames.

45A furnace comprising a tiltabie body providing n chamber having a cylindrical cent1-ni portion and a truncated conical end, und burners arranged couvcrgingiy in the top of the furnace and arranged to project flame towards the heartlrof the furnace, said conical end of the furnace causing'tbe flame to rotate.

A furnace comprising i1 tiltable body having a top outlet for the products of combustion, and burners entering the furnace on eithorside of the outlet and discharging flame into the furnace, the interior walls of the furnace being arranged to cause the flame to rotatie in tbe n furnace in two similar circles before exit throug che out` let. l f v y 6.-A furnace comprising a ".tiltable body having a top,l outlet for the products of combustion, and burners enter# ing the furnace ou eitherside` of the outlet and arrangedl convergingly whereby the flame jets therefrom converge orl focus at a' point below'such outlet, the combined flame jet beingpdirected towards the hearth of the furnace which is arranged to divide such flame into two flames rotating on either side of such focal point, l 7. A furnace comprising a tiltable body having end openings for charging and pouring respectively and also having a-top opening for products of combustion, and burners located on either side of the top opening and arranged todischarge flame towards the hearth ofthe furnace, the interior walls of the furnace being arranged to cause the flame to rotate before exit through the top opening.

8. A furnace comprising a tiltable body having an outlet andprovided with an extension communicating 'with the outlet, a: casing forming an air heating chamber around said extension, an air supply pipe' communicating with said chamber, burners arranged in said furnace and communicating with and receiving heated air from said chamber, and a fuel pipe for supplying fuel to said burners. f

9. A furnace comprising a furnace body provided with openings at opposite ends for charging and pouring -re- .spectively and also provided with a vent opening,A and burners discharging flame into"'the"furnace and so inclined as to cause the flame to impmge the hearth, said hearth being inclined over its central portion upwardly to cause the flame to move laterally toward opposite ends of the furnace.n Y i I 10. A furnace comprising a furnace body .substantially barrelshaped and provided with openings at opposite ends for charging and pouring respectively and aiso'providedl with a vent opening at the upper or longer side of saidLv body, and burners entering the furnace body at a point adjacent said vent opening and discharging llame into the furnace the'longer axis of the furnace body being substantially horizontal.' l I l 11.5A furnace comprising a furnace body substantially barrelshaped and provided with openings at opposite ends for charging and pouring respectively and also provided '111 with a vent opening, and a burner entering'the furnace body at a point adjacent saidvent opening and discharging llame into the furnace ,the longer axis of the Afurnace body being substantially horizontal.v l 12. A furnace comprisinga tiltab'le furnace bodS7 provided with openings at opposite ends for charging and pouring respectively and also provided wi'th a vent open' ing, and a burner for discharging name inton the furnace the longitudinal or horizontal axis of the furnace exceeding its transverse axis.

13. A furnace comprising a tiltabie furnace body provided with openingsy at opposite ends for charging and pouring respectively and also provided with a vent openy ingfsald furnace body having a hearth upwardly inclined l at its ends, and burners discharging flame into the furnace -13 toward the middle point of' the hearth and arranged within; the vertical planes of such ends. v

14. A furnace comprising-'a furniice body provided withopcnings at opposite ends for charging .and pouring respectively and also provided with a vent opening, said furnace body having a hearth upwardly inclined at its ends, being substantially barrel-shaped with the longer axis substantially horizontal and a plurality of burners convergingly arranged to`direct flame toward the middle point of the hearth. A 14 15. A furnace comprising a tiltabie'furnace body having a barrel-shaped chamber with inclined ends forming a hearth, whose ends are inclined toward the middle portion and burners convergingly arranged to direct the flame to- .4 l wards the central portion of the hearth), saiigjnclined 14 ends of the hearth beim;r arranged to divide said'ilame in'to two separate and rotatinglflames.

EDWARD H. SCHWARTZ..

Witnesses z S. E. HIBBEN, Louis B'. EEWIN. 

